I feel bad for the Julia community. They must be sad that they didn't get picked over Swift.
I'm personally excited for the likes of Julia's Flux framework to get a bit more production ready, I think that's got serious legs.
Tim Besard gave a talk at a Tensorflow meetup recently that walked through the Julia stack (GPU&ML) that I would highly recommend: https://docs.google.com/presentation/d/1y93Kg8ZizvabKAGs-zmA...